Annemasse weather in August

In August, Annemasse sees average daytime highs of 23°C and overnight lows near 13°C, with 117 mm of rain across 12.7 wet days and about 14 hours of daylight. It is the 2nd-warmest and 6th-wettest month of the year here.

Highs ease over the month, from about 24°C in the first days to 21°C by the end. The sky is clear or mostly clear about 38% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 14 h 42 min at the start of August to 13 h 12 min by month's end. Set against the rest of the year, August is Annemasse's 2nd-clearest and 12th-windiest month. For the whole year in context, see Annemasse's year-round climate.

Daytime high
23°
2nd warmest
Overnight low
13°
11th coldest
Rainfall
117 mm
12.7 wet days
Daylight
14 hours
5:40 AM – 7:39 PM
Cloud cover
51%
2nd clearest
Wind
5 km/h
12th windiest
Solar energy
5.13 kWh/m²
Travel score
6.6
out of 10
Air quality
Moderate
PM2.5 12.4 µg/m³ · 2017

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 24°C in the first days to 21°C by the end.

A typical August day in Annemasse reaches about 23°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 28°C. Set against its neighbours, August runs on par with July and about 4°C warmer than September.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12414
22414
32414
42414
52414
62314
72314
82314
92314
102314
112314
122313
132313
142313
152313
162313
172313
182313
192313
202313
212313
222213
232213
242213
252212
262212
272212
282212
292112
302112
312112

How August really feels in Annemasse

Once humidity and wind are folded in, August averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

August sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Annemasse weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°11512.57.48.80.0
Feb / -2°9910.97100.4
Mar10° / 10912.74.811.62.2
Apr14° / 10913.52.813.33.6
May17° / 144160.414.74.8
Jun21° / 12°12314.8015.55.8
Jul23° / 13°12312.8015.26.6
Aug23° / 13°11712.70146.6
Sep19° / 10°10912.2012.35.7
Oct14° / 11212.40.510.73.9
Nov / 12513.54.29.21.4
Dec / -1°13113.47.28.50.1

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 21% of August, with mostly cloudy or overcast conditions the remaining 41%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
26040
36040
45941
55941
65941
75842
85842
95842
105842
115842
125842
135842
145941
155941
165941
176040
186040
196040
206040
216040
226040
236040
246040
255941
265842
275842
285842
295842
305842
315743

Chance of precipitation in August

Any precipitation

Annemasse gets around 117 mm of rain over 12.7 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 40% and peaks near 42% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
141
241
341
442
542
642
742
842
942
1042
1142
1241
1341
1441
1540
1640
1740
1840
1939
2039
2139
2239
2339
2439
2539
2639
2739
2839
2939
3039
3139

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

Most of August feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, August lands in the comfortable band about 45% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
1314919
2314919
3324920
4324820
5334720
6344719
7354619
8364619
9374518
10374517
11384517
12394516
13394515
14404515
15404514
16414613
17414613
18414613
19424612
20424612
21424612
22434611
23444511
24454411
25474310
26494210
2751409
2852399
2954388
3056368
3158357

Wind in August

Winds average 5 km/h in August, the calmest month.

Across August, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 42 min at the start of August to 13 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over August. Sunrise moves from 5:21 AM to 5:59 AM, and sunset from 8:01 PM to 7:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.75:218:01
214.65:228:00
314.65:237:59
414.55:247:57
514.55:267:56
614.55:277:55
714.45:287:53
814.45:297:52
914.35:317:50
1014.35:327:49
1114.25:337:47
1214.25:347:45
1314.15:367:44
1414.15:377:42
1514.05:387:40
1614.05:407:39
1713.95:417:37
1813.95:427:35
1913.85:437:34
2013.85:457:32
2113.75:467:30
2213.75:477:28
2313.65:497:26
2413.65:507:25
2513.55:517:23
2613.55:527:21
2713.45:547:19
2813.45:557:17
2913.35:567:15
3013.35:587:13
3113.25:597:11

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.13 kWh/m².

For context, solar energy here swings from a low near 1.13 kWh/m² to a high of 5.85 kWh/m² in July across the year — August's 5.13 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.4Bright
75.4Bright
85.4Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.1Bright
195.1Bright
205.1Bright
215.0Bright
225.0Bright
234.9Bright
244.9Bright
254.8Bright
264.8Bright
274.8Bright
284.7Bright
294.7Bright
304.6Bright
314.6Bright
Planning a trip in August

Is August a good time to visit Annemasse?

Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.6
Sightseeing
1st-best month of the year
4.9
Beach & pool
2nd-best month of the year

August is a reasonable time to visit Annemasse for sightseeing.

What to pack for Annemasse in August

From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In August, Annemasse sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Annemasse in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Annemasse peaks around July 14 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 14UV 9Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5Moderate
Apr5High
May7High
Jun8Very high
Jul9Very high
Aug7Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Annemasse in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Annemasse is worst in April — around 15 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

Seasonal pattern from CAMS reanalysis, scaled to Annemasse's WHO annual average of 12.4 µg/m³.

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodApr 1015 µg/m³Nov 1210 µg/m³
PM2.5 (µg/m³)Level
Jan13Moderate
Feb12Moderate
Mar15Moderate
Apr15Moderate
May13Moderate
Jun15Moderate
Jul11Good
Aug11Good
Sep11Good
Oct10Good
Nov10Good
Dec11Good
Location & terrain

Where is Annemasse?

Annemasse sits at 46.2°N, 6.2°E, 441 m above sea level, in France. The nearest listed city is Geneva, 7.0 km away.

Topography around Annemasse

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Annemasse.

Within 3 km, the terrain around Annemasse has significant variations in elevation — a maximum elevation change of 385 m around an average of 453 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,130 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,597 m.

The land around Annemasse is covered by artificial surfaces (38%) and trees (36%) within 3 km, trees (44%) and grassland (26%) within 16 km, and trees (54%) and grassland (30%) within 80 km.

3 km
385 m
16 km
1,130 m
80 km
4,597 m
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewater
August weather nearby: Geneva 7.0 km · Carouge 8.0 km · Lancy 10 km · Onex 10 km · Vernier 12 km · Meyrin 13 km · Nyon 21 km · Thonon-les-Bains 27 km

France travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / E
230 V · 50 Hz
Prices
≈ 77% of US
price level, 2025
GDP per capita
$48,986
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.3
per 100k, 2023
Road deaths
5.1
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 539
Religion
Roman Catholic 47%none 33%Muslim 4%Protestant 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Annemasse (46.1944°, 6.2378°, elevation 441 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).